The Texas Republican snapped a photo of Georgia Republican Paul Broun flashing a smile after what Stockman described as a "historic vote to #AuditTheFed" and tweeted it from his official account.

Though cellphones have become commonplace on the House floor, photography is strictly prohibited. A source with knowledge of the House rules confirmed that Stockman's photo is a violation of the rules. Photo or video documentation of proceedings by members of Congress breaches a clause on "comportment."

"A person on the floor of the House may not smoke or use a mobile electronic device that impairs decorum," states part of rule 17, clause 5.

In January 2011, Speaker John A. Boehner, R-Ohio, gave the OK to electronic tablet devices as long as they are used "unobtrusively." However, the ban on using devices for still photography, audio or video recording still stands.